Powertrain with series electric launch and electric power assisted performance
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United States of America Patent
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Nov 16, 2010
Issued Date -
N/A
app pub date -
Sep 23, 2005
filing date -
Sep 23, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
A powertrain includes an engine with an engine output member, such as a crankshaft, and a first motor/generator having a first rotor connected to the crankshaft for rotation therewith. A transmission includes a transmission input member, a transmission output member, and a differential gearing arrangement selectively operatively connecting the transmission input member and the transmission output member. A plurality of torque transmitting devices is selectively engageable to provide a plurality of fixed speed ratios between the transmission input member and the transmission output member. A second motor/generator includes a second rotor connected to the gearing arrangement to provide torque to the transmission output member. The transmission input member is selectively connectable to the engine output member and the first rotor to alternate between a series hybrid drive mode and a fixed ratio mode of powertrain operation. A corresponding method is also provided.
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